Organisation C

• Waxy cuticle

  
  

  Covers the surface of a leaf - helps reduce water loss through evaporation
• Epidermal cells

  
  

  Transparent to allow light to pass through to palisade layer
• Spongy mesophyll layer

  
  

  Large spaces to allow diffusion of gases
• Stomata

  
  

  allows CO2 to diffuse directly into the leaf
• Xylem and phloem

  
  

  Transport materials like water, nutrients, mineral ions and food
• Meristem tissue

  
  

  Growing at tips of shoots and roots - stem cell able to diffrentiate
• Translocation

  
  

  Sugars moving from one place to another
• Phloem is made of enlongated living cells with small pores in the end walls to allow cell sap to flow through

  Transport food and sugars